JP2005325010A - Ceramic for use in tempura - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that tempura has been said to lose out of a taste since a long time ago because a recent tempura is oily and an oil in even several pieces is offensive to the nose and that an edible oil is rapidly oxidized and consequently is necessary for such a disposal at the early stage as causes largely the water pollution and the bad environment. <P>SOLUTION: The ceramic for tempura is manufactured under the consideration of the plasticity temperature for displaying maximumly the effects that the compound function of an original mineral function such as a far-infrared radiation function, a cation-generating function, and adsorbing-, antifungal- and deodorizing-function, prevents the odor of an edible oil at the time of cooking, and that it postpones the denature of tempura, maintains the crispy tastes for a long time, and retards the oxidation of an edible oil. Additionally, the ceramic for tempura is composed of the underlaying ceramic which is made of a ceramic material for tempura, which is for easy handing, and which has a peculiar shape with the holes for bringing out better the effect of the ceramic material. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to ceramics for tempura plasticized with illite, tourmaline, barleystone, fluorite, and clay composition having viscosity and plasticity. Specifically, when cooking tempura, it is directly applied to heated cooking oil. The present invention relates to a submerged ceramic, a frying pan, and a container ceramic for a tempura.

  It is a well-known fact that the texture of food can be improved compared to metal containers when cooking such as cooking rice in an earthenware pot made of granite or plastic like granite. When grilling meat, it is common to cook in a frying pan with a stone plate or bottom shaped with stone powder. This means that stone is inferior to metal, that is, the heat capacity increases gradually and gradually cools to maintain a constant temperature for a long time, so that the food does not burn and has a soft texture. I will finish it.

However, according to the above techniques, in addition to these effects, the effects of far-infrared radiation and anion generation, and the effects of adsorption, deodorization, antibacterial effects, etc., improve the taste of milk products and prevent alteration, The effects such as extended use period and prevention of bad odor were not expected.
Therefore, this invention is based on long-term use, preventing deterioration of edible oil when cooking tempura with far-infrared radiation and anion generation, adsorption, deodorization, antibacterial effect as well as the effects of conventional stone containers, earthenware, etc. It is an object of the present invention to provide a ceramic material and a manufacturing method for preventing malodor and extending the quality change of the tempura food so as to achieve a crisp texture.

In order to solve the above problems, the first invention is illite having excellent far-infrared emissivity, tourmaline that generates a large amount of far-infrared radiation and anions, barley stone that has an ion exchange ability and generates a large amount of anions, There is provided a ceramic for tempura characterized by being plasticized with a fluorite that enables sintering at a low temperature and a clay composition that is viscous and plastic and that can be easily formed into a ceramic material composition.
Further, the second invention is a ceramic material for tempura characterized by forming a ceramic material for sunk use that is directly sunk in edible oil, and a container ceramic for frying pan and tempura.

またトルマリンは気成鉱性熱水鉱床の母岩ペグマタイトの中に存在し、化学成分は（Ｎａ，Ｃａ）（Ｍｇ，Ｆｅ^２＋，Ｌｉ）_３（Ａｌ，Ｆｅ^３＋，Ｍｎ Ｔｉ）_６・（Ｂ_３，Ｓｉ_６，Ｏ_２７）：（Ｏ，ＯＨ，Ｆ）_４である。これは多量の陰イオンを発生することが知られていて実際、トルマリン４０ｗｔ％をＰＶＣに添加形成させたマット用パイプラスティック片で陰イオンを測定した結果、陰イオン発生量が８９６（個／ｃｃ）に至り、麦飯石の粉末もやはり陰イオン発生量が７００前後と出た。他に低温での塑性を可能にする蛍石粉末、そして粘性及び可塑性があって上記塑性物を容易く成形することを可能にする粘土、以上の鉱物等を組成して低温塑性する方法で多孔質のてんぷら用セラミックスを製造する。
このてんぷら用セラミックス塑性物は雲気石３０ｗｔ％、電気石２０ｗｔ％、麦飯石１５ｗｔ％、蛍石５ｗｔ％、粘土３０ｗｔ％を混合した後、適量の水（固形粉に対して２５〜３０ｗｔ％）を添加させた後、第二発明である沈設型セラミックス、フライパン型セラミックス、器型セラミックスに成形した後、３〜５日間陰干しし水気含量２〜３％になった時点で９００〜１，１１０℃範囲で焼結させる。
雲気石は２００〜８００℃で無水状態になり１，０５０〜１，１００℃でスピンネル構造になる。これ以上の温度では気孔率が急激に減少して１，１５０℃では硝子化して遠赤外線放射機能も０，８以下に激減する。
また塑性温度１，１００℃で電気石や麦飯石は焼結初期段階となり、温度が上昇して焼結中期状態になると気孔が著しく減少し通気性がなくなりはじめ、更に温度が上昇した焼結終期段階では気孔の大部分が消えて結晶粒が成長、塑性反応によって新しい複塩等が生成され陰イオン発生量が半分以上に激減するので塑性温度１，１００℃を超えない焼結初期段階を維持しなければならない。
蛍石は低融点融剤として使われるがここでは上記温度の範囲で応用し他の組成物を結着させる働きを必要とする。蛍石は素材の強度を高めるうえ、焼結中に容易く分解して、出てくるフッ化水素酸とＳｉＯ_２とが反応してＳｉＦ_４を揮発させ発泡することによって焼結体が多孔質を持つようになる。しかし多い量を使えば焼結体の他の機能を減少させる。
粘土は粘性と可塑性があって上記組成物の大部分が非可塑性鉱物の粉末なのでこれらを苛小化させたものと合わせることによって組成物を成形することができるが、粘土の割合を高めると遠赤外線放射率と陰イオン発生量、脱臭性、抗菌性が減少するので最小限の造成比としなければならない。９００℃で気孔率３４％まで得ることができるが、あまり低温で焼結すればセラミックスとしての強度が下がる。なお１，１００℃で気孔率２５〜３０％である。この発明で設定した焼結温度範囲で製造された焼結体は組成物個々として現わす機能には及ぶことができないが、当焼結体を粉砕した粉末で計測した結果は、遠赤外線放射率（５〜２０μｍ）が０．８９、陰イオン発生量（個／ｃｃ）が６５０、気孔率１７〜２１％、セラミックス素材粉末の脱臭率は雲気石粉末の脱臭率に比べて約１５％の減退、抗菌性も同じく約１８％の減少に留まった。
上のような総合的な機能を持っているてんぷら用セラミックス容器（５リットル）とステンレス器で、４リットルの食用油を使用し、てんぷら（イカてんぷら）料理をした結果、下のような結果を得ることができた。
（１）セラミックス素材はてんぷら料理をした後、食用油底面に集積された水が全然なく、ステンレス器には水滴が集積されていた。てんぷら用セラミックス素材に水が集積されていない理由は集積されるであろう水分を吸着することにある。特にこのセラミックス素材容器の場合は、熱により水気を外部に蒸発させてしまう。この吸着・放出の作用が繰り返されることで食用油底面に水が集積しなかったと考えられる。
また水気含量においてセラミックス素材で料理したてんぷら物は水分含有量が１３〜１７％で、ステンレス器で料理したてんぷら物の水気含量は２８〜３３％と現われた。これはてんぷら物をカラッと調理することに直接的な影響を与えるようになり、この風味の持続時間も延ばすようになる。
（２）同一条件で料理する場合、食用油の初期色相である緑黄色がセラミックス素材の場合が長く維持された。具体的にはセラミックス素材で料理する場合、約３倍の時間を経過して金属の器内の色と対等になった。
（３）てんぷら物の料理時食用油を長期間数回にかけて使えば食用油が劣化して酸敗が進行する。これによりにおいを発するようになるのだが、セラミックス素材では金属の用器使用時間の約５〜６倍の時間を使うことで食用油が等しい色相になる結果を現わした。このような結果はてんぷら用セラミックス素材の水気除去機能、脱臭機能、抗菌性機能、遠赤外線放射機能、陰イオン発生機能の複合的な結果によるものと見られる。
金属の容器ばかりでなく、このてんぷら用セラミックス素材容器とカーソルー熱容量が大きいことで味を良くすると知られている一般粘土土器との素材の機能と効果の違いを知るために粘土土器（気孔率３０％前後の５リットル容器）を温度９００〜１，１００℃で焼結し比較試験をした結果、表４のような結果を得た。

この発明によって製造されたてんぷら用セラミックス素材は優れた遠赤外線放射率と多量の陰イオン発生、吸着、抗菌性、脱臭性等の複合的な機能によっててんぷら用食用油の熱による劣化及び酸敗による変質を引き延ばすことで食用油を長期間きれいに使うことができ、食用油の長期間使用によって発生するにおいをとり除くことで新たにてんぷらする物ににおいを汚染させない。また、てんぷら物によって放出される水気をセラミックス素材が吸収除去し（容器類は外部に蒸発させる）てんぷら物に水気の含量を少なくすることでカラッとさせ、てんぷら物の風味を増す。またカラッとした状態を長く維持させることができるうえ、てんぷら物の変質を引き延ばさせることができる等、今後のてんぷら料理をする時、選好されることができるセラミックス素材だと言える。When cooking a tempura product, the 1st invention can extend the alteration by the heat | fever of edible oil, and can improve the flavor improvement and alteration of a tempura product. As a manufacturing method of ceramic materials for tempura, first, illite used in the materials for tempura ceramics is a kind of mica clay, which is the main component of weathered and altered rocks, with a single-thread crystal system and a plate-like form, and its chemical composition is K x (Al, Fe, Mg) y (Si, Al) ₄ O ₁₀ (OH) ₂ .nH ₂ O (where x≈about 1 to 0.5, y≈about 2). This has an excellent far-infrared radiation function, and the following table shows that it has adsorption, disinfection and deodorization functions.

Tourmaline is present in the host rock pegmatite of the aerobic hydrothermal deposit, and the chemical composition is (Na, Ca) (Mg, Fe ²⁺ , Li) ₃ (Al, Fe ³⁺ , Mn Ti) _{6. 3} , Si ₆ , O ₂₇ ) :( O, OH, F) ₄ . This is known to generate a large amount of anions. Actually, as a result of measuring anions with a pipe plastic piece for mat formed by adding 40% by weight of tourmaline to PVC, the amount of anions generated was 896 (pieces / cc ), And the barley stone powder also produced an anion generation amount of around 700. In addition, fluorite powder that enables plasticity at low temperature, and clay that has viscosity and plasticity, and that makes it easy to mold the above plastics, the above minerals, etc. are composed by the method of low temperature plasticity and porous Manufacturing ceramics for tempura.
This ceramic plastic material for tempura is made of 30% by weight of agarite, 20% by weight of tourmaline stone, 15% by weight of barley stone, 5% by weight of fluorite, and 30% by weight of clay. After being added to the second invention, it is formed into a submerged ceramic, a frying pan ceramic, and a container ceramic, and is then dried in the shade for 3 to 5 days. Sinter in the range.
Cloud stones become anhydrous at 200 to 800 ° C., and have a spinnel structure at 1,050 to 1,100 ° C. At temperatures higher than this, the porosity rapidly decreases, and at 1,150 ° C., it becomes vitrified and the far-infrared radiation function decreases drastically to 0.8 or less.
In addition, tourmaline and barley stone at the plastic temperature of 1,100 ° C are in the initial stage of sintering, and when the temperature rises and enters the middle stage of sintering, the pores are remarkably reduced and the air permeability is lost, and the temperature is further increased. At the stage, most of the pores disappear, crystal grains grow, new double salts are generated by plastic reaction, and the amount of anions generated is drastically reduced to more than half, so the initial sintering stage that does not exceed the plastic temperature of 1,100 ° C is maintained. Must.
Fluorite is used as a low-melting-point flux, but here it is applied within the above temperature range and needs to work to bind other compositions. Fluorite increases the strength of the material and is easily decomposed during sintering. The hydrofluoric acid and SiO ₂ that reacts react to volatilize and foam SiF ₄ to make the sintered body porous. To have. However, using a large amount reduces the other functions of the sintered body.
Since clay is viscous and plastic and most of the above composition is a non-plastic mineral powder, it can be formed by combining it with a causticized one. Infrared emissivity, anion generation amount, deodorization and antibacterial properties are reduced, so a minimum preparation ratio must be established. Although the porosity can be obtained up to 34% at 900 ° C., if the sintering is performed at a very low temperature, the strength as a ceramic is lowered. The porosity is 25 to 30% at 1,100 ° C. Although the sintered body manufactured in the sintering temperature range set in the present invention cannot reach the function expressed as an individual composition, the result of measurement with the powder obtained by pulverizing the sintered body is the far infrared emissivity. (5 to 20 μm) is 0.89, anion generation amount (pieces / cc) is 650, porosity is 17 to 21%, and the deodorization rate of the ceramic material powder is about 15% compared to the deodorization rate of the cloud stone powder. The decline and antibacterial activity also decreased by about 18%.
As a result of cooking tempura using 4 liters of cooking oil in a ceramic container for tempura (5 liters) and a stainless steel device with the above overall functions, the following results were obtained. I was able to get it.
(1) After cooking the tempura, the ceramic material had no water accumulated on the bottom surface of the cooking oil, and water droplets were accumulated on the stainless steel device. The reason why water is not accumulated in the ceramic material for tempura is to adsorb moisture that would be accumulated. In particular, in the case of this ceramic material container, moisture is evaporated to the outside by heat. It is considered that water did not accumulate on the bottom surface of the edible oil by repeating this adsorption / release action.
Further, in the water content, the tempura cooked with the ceramic material had a water content of 13 to 17%, and the water content of the tempura cooked with a stainless steel device was 28 to 33%. This will have a direct impact on the crispy cooking of the tempura and will also increase the duration of this flavor.
(2) When cooking under the same conditions, the case where the yellowish green color of the edible oil was a ceramic material was maintained for a long time. Specifically, when cooking with a ceramic material, about three times the time passed and became equal to the color in the metal bowl.
(3) If cooking oil for cooking tempura is used over a long period of time, the cooking oil deteriorates and the rancidity proceeds. As a result, odors are emitted, but in the case of ceramic materials, edible oils have the same hue by using about 5 to 6 times the usage time of metal utensils. Such a result is considered to be due to the combined results of the water removing function, deodorizing function, antibacterial function, far infrared radiation function, and anion generation function of the ceramic material for tempura.
Not only metal containers, but also clay pottery (porosity 30) to know the difference in function and effect of ceramic container for tempura and general clay pottery that is known to improve taste due to its large cursor heat capacity As a result of a comparative test by sintering a 5-liter container of about 5%) at a temperature of 900 to 1,100 ° C., the results shown in Table 4 were obtained.

The ceramic material for tempura produced according to the present invention has excellent far-infrared emissivity and a large amount of anion generation, adsorption, antibacterial properties, deodorization and other combined functions due to heat deterioration of tempura edible oil and alteration due to acid spoilage By extending the edible oil, edible oil can be used cleanly for a long period of time, and by removing the odor generated by long-term use of the edible oil, the odor is not contaminated by the newly-purified material. Moreover, the ceramic material absorbs and removes the moisture released by the balance product (the containers are evaporated to the outside), and the balance is reduced by reducing the moisture content, thereby increasing the flavor of the balance product. Moreover, it can be said that it is a ceramic material that can be favored when cooking tempura in the future, such as being able to maintain a crisp state for a long time and extending the alteration of the tempura.

One embodiment of the present invention is shown in FIG.
This is a sinking ceramic formed of an inventive material, and a circular hole is provided in the main body.

"Effect of the embodiment"
According to this embodiment, the main body can remain stably in the edible oil. A circular hole provided in the main body increases the surface area, and the effects of the material can be exhibited more.

"Other embodiments"
In the embodiment of FIG. 1, it is for sinking, but in other embodiments, a frying pan-type ceramic may be formed as shown in FIG. 2, and a container-type ceramic may be formed as shown in FIG. 3.

It is a perspective view which shows one Embodiment of this invention. FIG. 1 shows an actual example 1 made of a ceramic material for tempura according to the present invention. It is a perspective view which shows one Embodiment of this invention. FIG. 2 shows an actual example 2 made of a ceramic material for a tempura according to the present invention. It is a perspective view which shows one Embodiment of this invention. FIG. 3 shows an actual example 3 manufactured with the ceramic material for tempura according to the present invention.

Explanation of symbols

1 hole 2

Claims (2)

After uniformly mixing illite 30w%, tourmaline 20w%, barley stone 15w%, fluorite 5w%, clay 30w%, water of 25-30w% by weight is added to the solid powder, and a ceramic material is formed. A ceramic for tempura, which is dried in the shade for 3 to 5 days and sintered to a low temperature plasticity in a temperature range of 900 ° C. to 1,100 ° C. in a moisture content of 2 to 3%. The ceramics for tempura according to claim 1, wherein the ceramics for sedimentation, the frying pan-type ceramics, and the container-type ceramics are formed from the ceramic material according to claim 1.

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